First, find the area of the whole square 9 x 9 = 81 ---------------------------- Now find the area of the triangles. Two triangles equal 1 square since the triangles are 3 feet on one side and one another, the area of two triangles is 9, or 4.5 for one Now multiply by 2 or 4 depending on which number you decide ( 9 or 4.5) 9 x 2 = 18 4.5 x 4 = 18 -------------------------------------------- Now subtract 81 - 18 = 63 63 is your answer
